iTextSharp.text.pdf.PdfAcroForm.DrawCheckBoxAppearences C# (CSharp) Метод

        public void DrawCheckBoxAppearences(PdfFormField field, string value, float llx, float lly, float urx, float ury)
        {
            BaseFont font = BaseFont.CreateFont(BaseFont.ZAPFDINGBATS, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
            float size = (ury - lly);
            PdfAppearance tpOn = PdfAppearance.CreateAppearance(writer, urx - llx, ury - lly);
            PdfAppearance tp2 = (PdfAppearance)tpOn.Duplicate;
            tp2.SetFontAndSize(font, size);
            tp2.ResetRGBColorFill();
            field.DefaultAppearanceString = tp2;
            tpOn.DrawTextField(0f, 0f, urx - llx, ury - lly);
            tpOn.SaveState();
            tpOn.ResetRGBColorFill();
            tpOn.BeginText();
            tpOn.SetFontAndSize(font, size);
            tpOn.ShowTextAligned(PdfContentByte.ALIGN_CENTER, "4", (urx - llx) / 2, (ury - lly) / 2 - (size * 0.3f), 0);
            tpOn.EndText();
            tpOn.RestoreState();
            field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, value, tpOn);
            PdfAppearance tpOff = PdfAppearance.CreateAppearance(writer, urx - llx, ury - lly);
            tpOff.DrawTextField(0f, 0f, urx - llx, ury - lly);
            field.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, "Off", tpOff);
        }